diff --git a/.vscode/settings.json b/.vscode/settings.json
new file mode 100644
index 0000000..9df2095
--- /dev/null
+++ b/.vscode/settings.json
@@ -0,0 +1,3 @@
+{
+	"python.pythonPath": "/home/longqi/.local/share/virtualenvs/xnergy-example-V4bzqeLx/bin/python"
+}
\ No newline at end of file
diff --git a/app.py b/app.py
index 20a5328..10bbf5f 100755
--- a/app.py
+++ b/app.py
@@ -2,7 +2,8 @@
 # -*- coding: utf-8 -*-
 '''
 The app will try to start charging 
-and show the DC bus voltage, battery voltage and charging current 
+
+and show the charger voltage, battery voltage and charging current 
 stop charging in 30 seconds
 '''
 from minimalmodbus import Instrument, MODE_RTU
@@ -19,7 +20,7 @@ MODBUS_FC_READ_INPUT_REGISTERS = int("0x04", 16)
 MODBUS_FC_WRITE_SINGLE_REGISTER = int("0x06", 16)
 
 enable_charger_address = 0
-dc_bus_voltage_adddress = 30
+charger_voltage_adddress = 30
 batery_voltage_address = 32
 current_address = 31
 
@@ -48,7 +49,7 @@ def run():
 
 	counter = 0
 	while True:
-		dc_bus_voltage = instrument.read_registers(registeraddress=dc_bus_voltage_adddress, number_of_registers=1,
+		charger_voltage = instrument.read_registers(registeraddress=charger_voltage_adddress, number_of_registers=1,
 																					functioncode=MODBUS_FC_READ_INPUT_REGISTERS)
 		batery_voltage = instrument.read_registers(registeraddress=batery_voltage_address, number_of_registers=1,
 																					functioncode=MODBUS_FC_READ_INPUT_REGISTERS)
@@ -57,7 +58,8 @@ def run():
 		
 		print(
 			str(counter) + ' ' 
-			'DC BUS voltage: ' + str(dc_bus_voltage) + ' '
+
+			'Charger voltage: ' + str(charger_voltage) + ' '
 			'Battery voltage: ' + str(batery_voltage) + ' '
 			'Current: ' + str(current)
 			, end='\r', flush=True)